• Korean Journal of Ecology and Environment
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• v.49 no.1
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• pp.1-10
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• 2016

The increases of industrial and technological development and human activities have disturbed the balance of natural nitrogen (N) circulation. These phenomena have induced that large amounts of N are to be present in excess in air, soil and water environment. We investigated the effects of excess of reactive nitrogen ($N_r$) compounds on soil and water environment ecosystems through literature and case studies, and suggested the strategy of mitigating the acidification in soil and water ecosystems. $N_r$ moves to air, soil and water media, can be converted to different types, and interacts with other chemical compounds. As an efficient N management plan, the evaluation (application of monitoring and safety index) and the chemical restoration (research and development) of the acidification in soil and water environment ecosystems are required to minimize the effects of $N_r$ as well as policies to regulate the various emission sources and amounts of $N_r$.

• Journal of The Korean Association For Science Education
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• v.21 no.4
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• pp.648-657
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• 2001

Using the concepts on the need of existence of living things, we investigate students' concepts on interdependence concepts between living things. The purposes of this study are to identify components of conceptual ecologies influencing on students' concepts and to describe the relations between those components and their concepts. The subjects of this study are 4 boys, 2 girls in the 3rd grade of middle school. The sources of data used in this study include a questionnaire, interviews and observation of the discussion class. Then, all data collected through each methods are compared and summarized in the relation to the questions of research. As a conclusion, it reveals that students' concepts are connected with several cognitive or affective components. Especially, the major components influencing on students' concepts are their metaphysical beliefs, conceptions includes other fields. These components function as constraints. Given these results, a teacher who want to teach a new concept to students should consider their characteristics and the components of conceptual ecology.

• Asian Journal of Turfgrass Science
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• v.20 no.2
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• pp.253-264
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• 2006

It is a general trend that golf courses have been developed on mountain areas or in valleys due to economical or legal reasons in Korea. Therefore, most of golf courses have special landscape characteristics of brooks and ridge lines as well as peaks. Development of golf courses in the regions of intermediate valley significantly influences ecological factors such as biodiversity, hydrology, and biogeochemical cycles due to changes in original ecosystems of valleys, ridges, and peaks. This study developed a comprehensive framework to incorporate ecological principles and examples into the landscape planning and design process. The restoration system fur water environment may significantly minimize the ecological impacts from developing golf courses. Biotops and artificial damps have been applied to a golf course construction site in southern part of Korea, requiring a restoration of existing water ecosystem by the local EPA. The detailed drawings and water restoration plans were presented in this paper.

• Proceedings of the Korean Association of Geographic Inforamtion Studies Conference
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• 1999.12a
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• pp.16-20
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• 1999

우리나라 특히 서ㆍ남해안은 전형적인 리아스식 해안으로 해안선 출입이 잦아 해안의 대표적인 지형들이 골고루 발달해 있는 곳이며, 해안생물자원도 풍부한 지역이다. 종래의 생태계 조사방법은 종목록을 작성하는 수준이었기 때문에 자연자원과 생태계 보존 및 관리에 필요한 해안생태계의 서식지 유형을 분류하여 지도화하는 작업이 우선적으로 이루어져야 한다. 이 연구는 태안해안국립공원 지역을 대상으로 다음의 세가지 연구를 시행하였다. 첫째, 해안생물의 서식 기반이 되는 물리적 요소인 기질, 경사도, 파랑에너지에 입각하여 서식지 유형을 분류하였다 둘째, 해안의 생태계 보존 및 관리에 영향을 미치는 토지이용 현황을 원격탐사를 이용하여 분류하였다. 셋째, 서식지와 토지이용을 결합하여 암석해안과 갯벌(모래, 펄)의 생태계 단위를 설정하였다. 이러한 생태계 단위는 생태적으로 관리전략을 세울 수 있는 토대가 될 수 있다.

• Proceedings of the Korea Information Processing Society Conference
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• 2018.05a
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• pp.588-591
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• 2018

다양한 센서와 네트워크의 발달로 인하여 여러 분야의 사물인터넷 서비스들이 보급되기 시작하였다. 국내 사물인터넷 서비스의 인프라 수준은 높지만 사물인터넷의 생태계의 부족으로 인하여 사물인터넷 서비스의 경쟁력이 약하다. 이는 사물인터넷 발전에 부정적이 영향을 가져올 수 있으므로 사물인터넷의 생태계의 구성에 관한 논의가 필요하다. 본 논문에서는 사물인터넷 생태계를 비즈니스 관점과 시장 중심의 관점으로 분석하고, 세부적으로 생태계를 구성하는 4가지 요소에 대해 분석한다. 또한 국내 사물인터넷의 생태계의 부족한 점에 관하여 논의를 한다. 본 논문은 사물인터넷 생태계의 분석을 통하여 국내 사물인터넷의 생태계의 도움을 주는 역할을 할 것이다.

• Journal of the Korea Society of Computer and Information
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• v.15 no.8
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• pp.193-200
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• 2010

This study is to identify the factors affecting on adolescent internet addition and suggest how to deal with it. This study is based on the ecosystem theory for human development. The factors affecting on adolescent internet addition are the followings: First, self-efficacy, self-esteem and self-control affect on internet addiction in individual system. Second, the affecting factors concerned with home environmental system are the communication level between parents and adolescent, parents' attitude for bringing up, parents' control level for adolescent, parents support etc. Third, the affecting factors concerned with school environmental system academic score, friends' support, teacher's support, adolescent adaptation in school life etc. This study suggest how to deal with internet addiction based on these findings.

• Journal of Environmental Impact Assessment
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• v.31 no.2
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• pp.95-105
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• 2022

Busan, where the coastal ecosystem health is deteriorating due to high development pressure and intensity of use, needs ecosystem management that considers humans and the natural environment together for sustainable use and ecosystem preservation of the coastal areas. In this study, the InVEST model was applied to assess the habitat status of the coastal land and coastal sea to manage the ecosystem based on habitats. As a result of the assessment of the coastal land, the habitat quality of Gadeok-do, Igidae, and Sinseondae, Gijang-gun are high, and Seo-gu, Jung-gu, Dong-gu, and Suyeong-gu are low. In the case of the coastal sea, the habitat risk of the Nakdong river estuary is low, and some areas of Yeongdo-gu, Saha-gu, Gangseo-gu are high. Therefore, for the sustainable use and preservation of coastal ecosystems, it is necessary to prepare ecosystem-based management measures to improve damaged habitats and reduce threats. In addition, the impact on coastal seas should be fully considered when planning coastal land development. The results of the InVEST habitat quality model in coastal land show similar tendencies to the biotope and environmental conservation value assessment map. The results of the habitat risk assessment in the coastal sea are expected to be utilized to identify habitats in the coastal sea and management of threat factors.

• Journal of Environmental Impact Assessment
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• v.32 no.6
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• pp.488-502
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• 2023

Ecosystem service accounting must measure ecosystem supply functions, demand, and the actual service flows that occur between them. In order to measure flows, supply and demand relationships must be defined, and a methodology that can objectify complex connections is needed. Although various studies on ecosystem services have been conducted in Korea, but researches on accounting for ecosystem services are not enough. The purpose of this study is to evaluate flood control ecosystem services by applying the EU methodology studied in the Experimental Ecosystem Account (EEA) of System of Environmental Economy Account (SEEA) and explore ways to introduce ecosystem account. To conduct the study, the ecosystem's runoff retention potential, social and economic demand for flood control, and actual service benefit flows formed from the relationships between them were modeled and quantified on a spatial basis. As a result of calculating the actual flow of flood control ecosystem services, the total domestic service amount was calculated to be 165,595 (ha), and it was confirmed that much of it was concentrated in agricultural land. In order to account for domestic flood control services in the future, key spatial data such as land cover maps must be continuously established and managed, and researches on input data and methodologies applicable to various spatial scopes such as national, regional, and unit watersheds are expected to be necessary.

• Journal of the Korean association of regional geographers
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• v.16 no.3
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• pp.315-323
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• 2010

The purpose of this study was to investigate the relationship between the determinant factors of visitors' satisfaction and behavioral intentions to the Shincheon stream in Daegu city. It was found that ecology of the Shincheon stream, signals about ecology, and physical facilities positively influenced overall satisfaction. Physical facilities more positively influenced overall satisfaction. The overall satisfaction positively influenced behavioral intentions. For the future studies, it is necessary to do research visitors' satisfaction with more diverse factors of satisfaction and longitudinal studies about visitors' satisfaction based on seasonally different visitors.

• Environmental Analysis Health and Toxicology
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• v.18 no.4
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• pp.277-285
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• 2003

연안의 방조제 건설은 하천수와 바다물의 교환을 인위적으로 차단하고, 방조제 내부에는 호수를 형성하게 된다. 이렇게 형성된 인공호수의 수질은 호수로 유입되는 하천의 수질에 크게 영향을 받을 수 있으며, 인공호수의 수질이 악화되면 인근 해양생태계에 영향을 미칠 수 있다. 본 연구는 인공호수의 물이 바다로 방류될 때 해양생태계에 어떠한 영향을 미칠 것인지를 예측하고자 수행되었다. 방조제 건설로 이미 형성되어 있는 시화호, 아산호, 부사호와, 현재 건설중인 새만금 방조제로 인하여 형성될 호수의 유입 하천인 만경강에서 표층수를 채수하여 둥근성게(Strongylocentrotus nudus)의 정자와 수정란을 이용한 생물 검정을 실시하였다. 담수호의 수질을 해양생물을 이용하여 평가할 수 있도록 하기 위하여 시료의 염분을 조절하면서 실험을 실시하였다. 정자를 이용한 수정 실험 결과, 시화호에서는 수정률에 영향을 미치지 않았고, 아산호와 부사호에서는 약간의 영향이 있었으나 그 정도는 미약하였다. 반면, 만경강의 경우 수정률의 저해가 상당히 크게 나타났다. 수정란을 이용한 발생 실험 결과, 시화호, 아산호, 부사호에서는 약간의 영향이 나타난 반면, 만경강의 경우는 매우 큰 영향이 나타났다. 이들 실험 결과를 종합하면, 시화호, 아산호, 부사호의 수질은 대체로 양호하나, 만경강의 수질은 크게 우려되는 수준이었다. 따라서, 앞으로 건설될 새만금 호수와 인근 해양생태계를 보전하기 위해서는 만경강의 수질 개선을 위한 대책이 마련되어야 할 것이다.